/Engine/Plugins/Animation/ControlRig/Source/ControlRig/Public/Rigs/RigHierarchyController.h
Adds a new parent to an element. For elements that allow only one parent the parent will be replaced (Same as ::SetParent).
Returns true if successful.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category=URigHierarchyController) bool AddParent ( [FRigElementKey](API\Plugins\ControlRig\Rigs\FRigElementKey) InChild, [FRigElementKey](API\Plugins\ControlRig\Rigs\FRigElementKey) InParent, float InWeight, bool bMaintainGlobalTransform, bool bSetupUndo )